As you can probably know from the name, microneedles are relatively small and there are many needles. In fact, it is like this, similar to the ancient mace. At present, the application of microneedles in medical beauty is gradually rising. Micro-needles are widely used in the field of beauty, which can be used for body shaping, beauty and skin care, and also have a good effect on treating alopecia and repairing scars.
Generally speaking, the application of micro-acupuncture in beauty and fitness can be summarized as the following aspects: anti-aging, prevention and treatment of alopecia, weight loss, treatment of acne, removal of orange peel tissue, reduction of local fat accumulation, dry skin tinea and so on. So what is the beauty principle of microneedles?
1 microneedle beauty principle
Stimulates the skin, creates a large number of microchannels, and enables active ingredients to effectively penetrate into the skin. At the same time, fine rolling acupuncture can stimulate the proliferation of collagen and fibroblasts in dermis. This kind of minimally invasive is to use a "micro-needle" smaller than a 30G fine needle for micro-needle, which not only heals the "micro-wound" quickly, but also leaves no scars. In other words, direct active ingredients and various nutrients can quickly penetrate into skin cells at different depths through very fine pinholes. These tiny minimally invasive wounds will not cause too much trauma and burden to the skin. During the repair period, ACME-TEA can also activate cells and promote the proliferation of collagen and elastic fibers, thus filling the cavity and diluting the scar pigment. It also allows skin cells to directly absorb the gene active components needed by the skin through microtubules.
Microneedles can be classified in many ways. For example, according to the classification of materials, it can be divided into silicon, metal, polymer microneedles and so on. At present, according to the application of microneedles in the field of drug introduction, microneedles can be divided into hydrogel microneedles, hollow microneedles, degradable microneedles, coated microneedles and solid microneedles. In recent years, a variety of micro-needle instruments have appeared in the cosmetic and plastic surgery market, such as roller micro-needle, sealed micro-needle, electric micro-needle, DermaFrac, RF micro-needle system and so on.
2 Several kinds of microneedle equipment
1, roller microneedle:
The most widely used microneedle at present. Generally, the main body consists of a handle and a roller. There are several rows of microneedles distributed on the roller, the length of which is generally 0.5 ~ 3 mm As the roller rolls on the skin, microneedles can form micropores on the skin or stimulate the proliferation of skin cells. Because this kind of microneedle is mostly medical grade steel, it is suitable for multiple use on large area of skin.
2, sealed microneedles:
It consists of a handle and a sealed head, and the microneedle is located on the seal. When in use, the microneedle acts vertically on the skin and is generally used for local scar treatment.
3. Electric microneedle:
This kind of microneedle is divided into pen-shaped body and vibration-sealed microneedle. Through mechanical driving, the microneedles in the head can vibrate repeatedly, eliminating the disadvantage of uneven skin stress when the operator uses the microneedles.
4、DermaFrac:
A new type of microneedle equipment combines microdermabrasion, microneedle, simultaneous deep tissue serum injection and LED lamp therapy to treat skin sunburn, acne, coarse pores, uneven skin color, wrinkles, fine lines and superficial scars.
5. RF microneedle system:
With the help of microneedles, electric energy is introduced under the skin to treat scars, hyperhidrosis, skin firming and facial rejuvenation without destroying the epidermis.
3 the role of microneedles
Using the physical function of microneedles, it can be used not only to treat scars, but also in the field of facial rejuvenation. In the past, people used chemical peeling to remove facial wrinkles, which caused inflammatory reaction when destroying the epithelial layer, and made the skin collagen deposit, thus achieving the effect of firming the skin. However, the treatment process of collagen deposition by destroying the stratum corneum barrier of skin affects the hydration of skin, and patients often feel dry skin after treatment. Laser wrinkle removal can effectively improve the smoothness of the skin, but skin fibrosis makes the skin pale, and skin collagen will be absorbed and fine lines will appear after a few years.
However, after slight skin injury caused by microneedle therapy, a variety of cytokines and growth factors are released. Subsequently, fibroblasts migrated and proliferated, collagen began to deposit, and new blood vessels were generated. With the transformation of type ⅲ collagen into type I collagen, the blood supply of the skin gradually recovered, the skin became tight and smooth, and the skin color became natural. Clinically, micro-acupuncture is used to treat the upper lip, forehead, eyes and other parts, and good results have been achieved. On the one hand, micro-acupuncture can make the face "young" by inducing collagen, on the other hand, it can be further treated by introducing hyaluronic acid and botulinum toxin.